Hey guys, just wondering what ppm I should start my autflowering seedlings at? I'm currently waiting on my mephisto seeds, I have what I believe to be a full range of nutes + RO water handy, comes in at 12ppm. I have cal/mag, canna start, canna rhizotonic, canna A+B, Dutch pro explode and canna Pk, I've pH up and down. Up until recently I thought that you should start seedlings at around 150-200 ppm but I've seen that others start between 400-600ppm, i would have thoguht this too high, if someone could help shed some light on the discrepancies between starting ppm ranges that would be fantastic.